The United Farm Workers of America (predecessor name, United Farm Workers Organizing Committee) is a 20th Century union, created when the National Farm Workers Association and Agricultural Workers Organizing Committee merged to form UFWOC, to further the rights of farm workers. As the union developed, it led strikes and organizing campaigns to advance their efforts.

Parts 1 and 2 of the Agricultural Workers History Collection are comprised of articles, publications, crop and migrant studies, farm wage rates, UFW grape and lettuce boycott newsletters, legislative reports and other materials documenting the history of agricultural labor in California and a few other states.